This thesis is devoted to the study of decision making within couples and the analysis of gendered educational choices. Until now, economic models provide a better understanding of behaviors, but do not achieve to explain gender differences in a whole. Indeed, traditional economic variables do not allow to represent entirely the allocation of time between partners, and human capital models do not achieve to explain why girls choose less paid tracks. The first chapter of this dissertation aims at better understanding determinants of “who gets what” within couples, in terms of monetary resources and time. Then a second chapter focuses on the production sphere of the household, by confronting the efficiency assumption to the allocation of time...